<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

</body>
<script>
    function test() {
        console.log("test")
        console.log("test")
        console.log("test")
        console.log("test")
    }
    
    var arr = ["a","b","c","d"] ;
    arr.forEach(function (item) {
        item = item + "atguigu"
    })

    test()
    console.log("---")
</script>
</html>